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Mar 23, 2021 at 22:33 comment added David Pfeffer @Decapod Yes, I am an engineer and I understand units of energy. Without understanding the effective efficiency of the unit, however, you won't know what equivalent you need in another form. In this case, there's tons of convective loss on the gas heater that isn't present on the electric.
Mar 10, 2021 at 7:06 comment added Decapod @DavidPfeffer. BTU/hr and kW/hr refers to the energy output of the units. The input units or energy required to obtain the output is always higher. The difference between input and output reflects the efficiency
Mar 8, 2021 at 15:54 comment added blacksmith37 You are confusing location and the reflector design with efficiency.
Oct 9, 2020 at 12:14 history edited batsplatsterson CC BY-SA 4.0
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Jun 5, 2020 at 16:17 comment added David Pfeffer @blacksmith37 No, that's not correct. If the electric heater is 100% efficient and the gas one is 0.00001% efficient, you would feel no heat from the gas one and plenty from the electric one. Efficiency has everything to do with it.
Feb 3, 2020 at 16:57 comment added blacksmith37 Watt to BTU conversion factor is 3.41214........ ; efficiency has nothing to do with it.
Apr 22, 2017 at 15:03 comment added David Pfeffer You can't convert 42,000 BTU/hr directly to 12,300W because of the significant differences in efficiency between the two units. The electric ones will be substantially more efficient.
Apr 22, 2017 at 14:49 history answered Decapod CC BY-SA 3.0